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Application of SWAT-MODFLOW Software to Evaluate Groundwater-Surface Water Interaction in West-Central Alberta

  • Author / Creator
    Chunn, David
  • Responsible watershed management is emerging as a key issue as humanity continues to place increasing demands on water resources. To meet future demands, it has become imperative that water resources be managed as a holistic system rather than solely focusing on individual aspects. Hydro(geo)logic models are one tool that can aid in understanding the complex factors that control water supply and management. Historically, hydro(geo)logic models have focused on either surface water or groundwater processes separately. However, there has been a recent push to develop models that consider both systems. This study applies a coupled surface water-groundwater (SW-GW) tool, SWAT-MODFLOW, to the Little Smoky River watershed in the Fox Creek area of Alberta, Canada in order to study the dynamics of a water supply and demand system in an area of high industrial activity. The coupled model integrates hydro(geo)logical processes of physical flow, providing a more accurate representation of the dynamic relationships between natural and anthropogenic factors that control the SW and GW of the region’s flow system. The primary objective of this study is to test SWAT-MODFLOW’s ability to simulate a more complex and variable region, as previous studies had a greater focus on the surface system’s interaction with shallow groundwater aquifers in smaller watersheds, and in more temperate climates. To that end, the model used in this project includes seven layers in MODFLOW that correspond to geologic formations, ranging widely in terms of their thicknesses and hydraulic properties. The model was subjected to snow and climate change influence, and each component model (SWAT and MODFLOW) was built and calibrated separately during the study. The result was a coupled tool that successfully included new influences, widening the possible range of scenarios in which this tool can be applied.

  • Subjects / Keywords
  • Graduation date
    2018-11
  • Type of Item
    Thesis
  • Degree
    Master of Science
  • DOI
    https://doi.org/10.7939/R38W38J2W
  • License
    Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.